tony-sol · February 13, 2025 11:30 · Feb 13, 2025
diff --git a/getForksStats.js b/getForksStats.js
@@ -0,0 +1,65 @@
+javascript:(async () => {
+    /* Ensure the script is run on a valid GitHub repository page */
+    const ensureForksPage = () => {
+        const match = window.location.href.match(/^https:\/\/github\.com\/([^/]+)\/([^/]+)(\/forks\/?)?/);
+        if (!match) {
+            alert('Run this from a GitHub repository page.');
+            throw new Error('Not on a valid GitHub repository page.');
+        }
+        if (!match[3]) {
+            window.location.href = `https://github.com/${match[1]}/${match[2]}/forks`;
+            throw new Error('Redirecting to the forks page.');
+        }
+        return { user: match[1], repo: match[2] };
+    };
+
+    /* Fetch the default branch of a repository */
+    const getDefaultBranch = async (user, repo) => {
+		let token = prompt("Insert your GITHUB_TOKEN. It won't be saved");
+        const res = await fetch(`https://api.github.com/repos/${user}/${repo}`, { headers: { accept: 'application/json', authorization: `Bearer ${token}` } });
+        if (!res.ok) throw new Error(`Failed to fetch default branch for ${user}/${repo}`);
+        return (await res.json()).default_branch;
+    };
+
+    /* Fetch branch information */
+    const fetchBranchInfo = async (user, repo, branch) => {
+        try {
+            const res = await fetch(`https://github.com/${user}/${repo}/branch-infobar/${branch}`, { headers: { accept: 'application/json' } });
+            if (res.ok) return (await res.json()).refComparison;
+        } catch (e) {
+            console.error(`Error fetching branch info for ${user}/${repo}:`, e);
+        }
+        return null;
+    };
+
+    try {
+        /* Ensure on the forks page and get main repository details */
+        const { user: mainUser, repo: mainRepo } = ensureForksPage();
+        const defaultBranch = await getDefaultBranch(mainUser, mainRepo);
+
+        /* Process fork links */
+        const forks = [...document.querySelectorAll('ul[data-view-component="true"] > li')];
+        for (const fork of forks) {
+            const repoLink = fork.querySelector('a[href*="/"]:nth-of-type(2)');
+            const match = repoLink?.href.match(/github\.com\/([^/]+)\/([^/]+)/);
+            if (!match) continue;
+
+            const [_, user, repo] = match;
+            let branchInfo = await fetchBranchInfo(user, repo, defaultBranch);
+            if (!branchInfo) branchInfo = await fetchBranchInfo(user, repo, await getDefaultBranch(user, repo));
+
+            if (branchInfo) {
+                const { ahead, behind } = branchInfo;
+                const info = `Ahead: <font color="#0c0">${ahead}</font>, Behind: <font color="red">${behind}</font>`;
+                const infoDiv = document.createElement('div');
+                infoDiv.innerHTML = info;
+                infoDiv.style.marginTop = '10px';
+                infoDiv.style.fontSize = 'small';
+                fork.appendChild(infoDiv);
+                if (ahead === 0) fork.style.display = 'none';
+            }
+        }
+    } catch (e) {
+        console.error('Error in bookmarklet execution:', e);
+    }
+})();